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Bootstrap class: .popovers

<button type="button" class="btn btn-secondary" data-container="body"
        data-toggle="popover" data-placement="top"
        data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
  Popover on top
</button>

<button type="button" class="btn btn-secondary" data-container="body"
        data-toggle="popover" data-placement="right"
        data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
  Popover on right
</button>

<button type="button" class="btn btn-secondary" data-container="body"
        data-toggle="popover" data-placement="bottom"
        data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
  Popover on bottom
</button>

<button type="button" class="btn btn-secondary" data-container="body"
        data-toggle="popover" data-placement="left"
        data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
  Popover on left
</button>

Preview